package com.sdygmedia.action.kindeditor.actions;

import java.io.File;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Random;

import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.struts2.ServletActionContext;
import org.json.simple.JSONObject;

import com.opensymphony.xwork2.ActionSupport;

public class UploadImageAction extends ActionSupport {

	private final static String UPLOAD = "/attached";

	long maxSize = 1000000;

	@Override
	public String execute() throws Exception {

		HttpServletRequest request = ServletActionContext.getRequest();

		String savePath = request.getSession().getServletContext().getRealPath(
				"/")
				+ "attached/";
		// �ļ�����Ŀ¼URL
		String saveUrl = request.getContextPath() + "/attached/";

		HashMap<String, String> extMap = new HashMap<String, String>();
		extMap.put("image", "gif,jpg,jpeg,png,bmp");
		extMap.put("flash", "swf,flv");
		extMap.put("media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb");
		extMap.put("file", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2");

		if (!ServletFileUpload.isMultipartContent(request)) {
			// out.println(getError("��ѡ���ļ���"));
			return "";
		}

		// ���Ŀ¼
		File uploadDir = new File(savePath);
		if (!uploadDir.isDirectory()) {
			// out.println(getError("�ϴ�Ŀ¼�����ڡ�"));
			return "";
		}
		// ���Ŀ¼дȨ��
		if (!uploadDir.canWrite()) {
			// out.println(getError("�ϴ�Ŀ¼û��дȨ�ޡ�"));
			return "";
		}

		String dirName = request.getParameter("dir");
		if (dirName == null) {
			dirName = "image";
		}
		if (!extMap.containsKey(dirName)) {
			// out.println(getError("Ŀ¼����ȷ��"));
			return "";
		}
		// �����ļ���
		savePath += dirName + "/";
		saveUrl += dirName + "/";
		File saveDirFile = new File(savePath);
		if (!saveDirFile.exists()) {
			saveDirFile.mkdirs();
		}

		SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
		String ymd = sdf.format(new Date());
		savePath += ymd + "/";
		saveUrl += ymd + "/";
		File dirFile = new File(savePath);
		if (!dirFile.exists()) {
			dirFile.mkdirs();
		}

		FileItemFactory factory = new DiskFileItemFactory();
		ServletFileUpload upload = new ServletFileUpload(factory);
		upload.setHeaderEncoding("UTF-8");
		List items = null;

		try {
			items = upload.parseRequest(request);
		} catch (FileUploadException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}

		Iterator itr = items.iterator();
		while (itr.hasNext()) {
			FileItem item = (FileItem) itr.next();
			String fileName = item.getName();
			long fileSize = item.getSize();
			if (!item.isFormField()) {
				// ����ļ���С
				if (item.getSize() > maxSize) {
					// out.println(getError("�ϴ��ļ���С�������ơ�"));
					return "";
				}
				// �����չ��
				String fileExt = fileName.substring(
						fileName.lastIndexOf(".") + 1).toLowerCase();
				if (!Arrays.<String> asList(extMap.get(dirName).split(","))
						.contains(fileExt)) {
					// out.println(getError("�ϴ��ļ���չ���ǲ��������չ��\nֻ����" +
					// extMap.get(dirName) + "��ʽ��"));
					return "";
				}

				SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
				String newFileName = df.format(new Date()) + "_"
						+ new Random().nextInt(1000) + "." + fileExt;
				try {
					File uploadedFile = new File(savePath, newFileName);
					item.write(uploadedFile);
				} catch (Exception e) {
					// out.println(getError("�ϴ��ļ�ʧ�ܡ�"));
					return "";
				}

				JSONObject obj = new JSONObject();
				obj.put("error", 0);
				obj.put("url", saveUrl + newFileName);

				System.out.println(obj);
				System.out.println(obj.toJSONString());

				request.setAttribute("msg", obj.toJSONString());

				// request.getRequestDispatcher("jsp/show.jsp").forward(request,
				// response);
			}

		}

		return "success";
	}

}
